- (a) A submerged biological contactor (SBC) unit may be used in conjunction with other systems.
- (b) An SBC system may be used as a roughing unit in series with activated sludge as described in §217.183 of this title (relating to Nitrifying Trickling Filters--Additional Requirements).
- (c) SBC units may be installed in existing activated sludge basins to create a combination fixed and suspended growth process.
- (d) If a dual system employs an SBC unit, the report must include supporting data, calculations, process descriptions, and vendor information to describe how the proposed system will provide the required treatment levels.
- (e) These designs may be subject to the requirements of §217.7(b)(2) of this title (relating to Type of Plans and Specifications Approvals).
Source Note:The provisions of this §217.189 adopted to be effective August 28, 2008, 33 TexReg 6843.